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lifted the 326% feet difference in levels between Lake Ontario and Lake Erie and to cover a distance of 25 miles is 8 hours. There are 21 railway and highway bridges across the canal. The greatest height of lock wall, between locks No. 4 and No. 5, is 180.8 feet. The estimated weight of metal in a lock gate with fixed parts and machinery is 23,000 tons. Excellent progress in completing the canal has been made during the 1928 season. The appropriation for the past year amounted to $13,750,000 of which amount nearly $10,000,000 has been expended by the end of November. The total net expenditure on the ship canal up to Oct. 31, 1928 was approximately $98,750,000 which is about 85 per cent of the total esti- mated cost of the canal. , During 1928 construction operations have been car- ried on throughout practically the whole length of the canal. A summary in detail of the exact progress of the work in various sec- tions of the canal is not necessary for the purposes of this article. How- ever, certain outstanding features may be mentioned. For instance the new harbor at Port Weller on Lake On- tario together with locks, 1, 2, and 3 and their connecting reaches are en- tirely completed and the lock struc- tures are being outfitted with their operating equipment. The great mas- sive steel service gates for these locks are completed and at lock No. 1 these gates have already been equipped with their operating machinery. Four highway bridges cross the ship canal in way of sections 1 and 2. Three of these are completed and the fourth will be completed in 1929. Use High Pressure Boilers on Liner NE of the interesting features O of the turbine electric liner, VICEROY OF INDIA, building for the Peninsular and Oriental Naviga- tion Co., at the yard of Alexander Stephens & Son Ltd., Linthouse, Eng- land, launched Sept. 15, and now about completed, is her boilers. This vessel will be propelled at a speed of 19 knots by twin screws driven by two electric motors totaling 18,000 shaft horsepower. Steam turbine elec- tric generators take high pressure steam from Yarrow watertube boilers burning oil fuel. The overall di- mensions of the VICEROY OF INDIA are: Length, 610 feet; beam, 80 feet; and depth to the upper of her nine decks, 82 feet. Her tonnage is over 19,000 tons and the displace- ment is approximately 25,000 tons. She is unique in that she has 415 separate cabins for 415 passengers. Communication is possible between cabins by sliding doors where re- quired. Her stability has been care- fully considered and it is anticipated that she will be very steady. The accompanying illustration shows one of the six Yarrow boilers fitted in this vessel. Steam is supplied at 350 pounds pressure and 700 degrees Fahr. The boilers are situated in two separate stokeholds. Four are placed in the aft stokehold forming a watertight compartment, and are of sufficient capacity to enable the forward stokehold to be entirely shut down when the vessel is steaming at 16% knots. In addition to the ONE OF SIX YARROW WATERTUBE BOILERS ON ELECTRIC LINER VICEROY OF INDIA 28 MARINE REVIEW—January, 1929 Yarrow boilers there are also two cylindrical boilers in the forward stokehold for supplying steam in port if needed in addition to power fur- nished by the two diesel engine gen- erators which have been installed for harbor purposes. The air required for forced draft is supplied by six electrically driven fans, the motors being of the Austin constant current type, giving a large speed variation. The boilers are ar- ranged for oil fuel firing on the Clyde oil fuel system made by the builder of the ship. The entire oil fuel plant, including pumping and heating units, transfer pumps and filters, is placed in two separate pump rooms situated between the forward and aft stokeholds. All oil fuel pumps are electrically operated. About 2300 tons of oil fuel can be car- ried in 22 tanks surrounding the boiler compartments, the tanks being filled from a central station on each side of the ship, and the quantity of oil in each tank may be measured at any time by means of a_ special mercurial gage. Feed water for the boilers is sup- plied by two Weir turbo feed pumps, and any loss of feed water is made up from fresh water in the double bottom tanks, which is purified by being evaporated in a low pressure evaporator. The feed arrangements are designed on the Weir closed feed system and the feed heating is in three stages, there being one surface heater on the discharge side of the water extracting pumps and two sur- face heaters, one intermediate pres- sure and one high pressure, on the discharge side of the turbo feed pumps. Steam for the heaters is bled from the main turbine and ex- haust from the feed pump, and the feed temperature will be about 300 degrees Fahr. arias siaaiic kainic